R2511-HP MSR Router Series Voice Configuration Guide(V5)

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To ensure the validity of registration information of a voice entity or an SIP trunk account on the registrar,
the voice entity or SIP trunk account must re-register with the registrar at a specified time before the
registration expiration interval is reached. Use the timer registration divider or timer registration
threshold command to set the time when the voice entity or SIP trunk account re-registers with the
registrar.
• Use the timer registration divider command to set the expiration percentage. When the time, which
is registration expiration interval multiplied by expiration percentage, is reached, the voice entity or
SIP trunk account re-registers with the registrar.
• Use the timer registration threshold command to set the lead time before expiration. When the time,
which is registration expiration interval minus lead time before expiration, is reached, the voice
entity or SIP trunk account re-registers with the registrar.
You can configure both timers. In this case, the actual re-registration time is decided by the timer that
expires first. In other words, the voice entity or SIP trunk account tries to re-register with the registrar when
any one of the two timers expires.
Configuration guidelines
Registration timers are available to SIP trunk accounts. For more information about the SIP trunk account,
see "Configuring a SIP trunk account."
You can specify the registration expiration interval by providing the expires keyword in the registrar or
registrar server-group command. Otherwise, the registration expiration interval specified in the timer
registration expires command takes effect. The proxy command does not include the expires keyword,
so when registrations are initiated from a voice entity to the registrar specified by the proxy command,
the registration expiration interval is determined by only the timer registration expires command.
Configuration procedure
To configure registration timers:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Enter SIP client view.
sip N/A
4. Set the interval for the voice
entity or SIP trunk account to
re-register with the registrar
after registration failure.
timer registration retry seconds
Optional.
The default is 240 seconds.
5. Set the registration expiration
time.
timer registration expires seconds
Optional.
The default is 3600 seconds.
6. Set the registration
percentage.
timer registration divider
percentage
Optional.
The default is 80.
7. Set the lead time before
registration.
timer registration threshold
seconds
Optional.
The default is 0.
Configuring call failure-triggered re-registration
If the registrar fails and the registration information is lost after the registrar reboots, a service (such as a
call) initiated by a previously registered number will fail and the registrar will return an error code. If the